Photo-reconnaissance satellite - recovered after eleven days. Carried Nauka autonomous module that contained infrared and microwave telescope to study radiation from the Earth - in particular, it looked at ice in the polar regions.

Photo-reconnaissance satellite - recovered after 12 days. Carried Nauka autonomous module that made electron and gamma ray measurements as well using a scintillation spectrometer sensitive to X-rays in the energy range >30 keV, with a 2 deg x 17 deg field of view. In addition, there was an X-ray telescope which operated in the range 2-30 keV. The package detected several X-ray sources which were correlated to already identified Uhuru (another X-ray satellite) point sources and discovered new sources in the direction of the constellation Cetus.

Landed:

1971 Jul 6, 06:29

Recovery beacon:

TG

HF Transmit:

19.995 MHz, FSK/PDM

Cosmos 431 (Zenit-2M 11Ф690, Gektor) 1971-065A 5364

1971 Jul 30, 08:29 UTC

Baikonur Cosmodrome

Voskhod 11A57

1971 Jul 30: 190 x 265 km, 51.9 deg, 89.0 min

Photo-reconnaissance satellite - recovered after 12 days.

Landed:

1971 Aug 11, 06:29

Recovery beacon:

TG

HF Transmit:

19.995 MHz, FSK/PDM

Cosmos 439 (Zenit-2M 11Ф690, Gektor) 1971-078A 5478

1971 Sep 21, 12:00 UTC

Plesetsk Cosmodrome

Voskhod 11A57

1971 Sep 21: 208 x 290 km, 65.5 deg, 89.5 min

Photo-reconnaissance satellite - recovered after 11 days, one day less than normal.

Photo-reconnaissance satellite - recovered after 12 days. Carried Nauka autonomous module that tested components of the Condor control unit for the upcoming Yantar series - it was separated about day 9 of the flight.

Landed:

1972 Oct 29, 05:02

HF Transmit:

19.995 MHz, FSK/PDM

Cosmos 537 (Zenit-2M 11Ф690, Gektor) 1972-093A 6287

1972 Nov 25, 09:10 UTC

Baikonur Cosmodrome

Voskhod 11A57

1972 Nov 25: 201 x 309 km, 65.0 deg, 89.7 min

Photo-reconnaissance satellite - recovered after 12 days.

Landed:

1972 Dec 7, 04:48

HF Transmit:

19.995 MHz, FSK/PDM

Cosmos 547 (Zenit-2M 11Ф690, Gektor) 1973-006A 6353

1973 Feb 1, 08:30 UTC

Baikonur Cosmodrome

Voskhod 11A57

1973 Feb 01: 202 x 311 km, 65.0 deg, 89.7 min

Photo-reconnaissance satellite - recovered after 12 days.

Landed:

1973 Feb 13, 04:48

HF Transmit:

19.995 MHz, FSK/PDM

Cosmos 552 (Zenit-2M 11Ф690, Gektor) 1973-016A 6394

1973 Mar 22, 10:00 UTC

Plesetsk Cosmodrome

Voskhod 11A57

1973 Mar 22: 203 x 311 km, 72.9 deg, 89.7 min

Photo-reconnaissance satellite - recovered after 12 days. Carried Nauka autonomous module that tested components of the Condor control unit for the upcoming Yantar series - it was separated about day 4 of the flight.

Photo-reconnaissance satellite - recovered after 6 days. Also carried a test re-entry capsule for Yantar. Separation of the Yantar capsule's re-entry aeroshell failed and prevented deployment of the parachute. The capsule was subsequently destroyed on impact.

Photo-reconnaissance satellite. The launch announcement mentioned "...investigation of natural resources .... in the interests of the economy and international cooperation". Carried Nauka autonomous module.

Landed:

1979 Jun 7, 02:24

HF Transmit:

19.995 MHz, FSK

Cosmos 1106 (Zenit-2M 11Ф690, Gektor-Priroda) 1979-054A 11399

1979 Jun 12, 07:00 UTC

Plesetsk Cosmodrome

Soyuz-U

1979 Jun 12: 215 x 236 km, 81.4 deg, 89.1 min

Photo-reconnaissance satellite. The launch announcement mentioned "...investigation of natural resources .... in the interests of the economy and international cooperation". Carried Nauka autonomous module that included two identical combined scintillation spectrometers for the detection of hard X-rays and gamma rays.

Landed:

1979 Jun 25, 03:22

Recovery beacon:

TG

HF Transmit:

19.995 MHz, FSK

Cosmos 1118 (Zenit-2M 11Ф690, Gektor-Priroda) 1979-069A 11465

1979 Jul 27, 07:30 UTC

Plesetsk Cosmodrome

Soyuz-U

1979 Jul 28: 212 x 245 km, 81.4 deg, 89.2 min

Photo-reconnaissance satellite. The launch announcement mentioned "...investigation of natural resources .... in the interests of the economy and international cooperation".

Landed:

1979 Aug 9, 02:24

HF Transmit:

19.995 MHz, FSK

Cosmos 1122 (Zenit-2M 11Ф690, Gektor-Priroda) 1979-075A 11491

1979 Aug 17, 07:45 UTC

Plesetsk Cosmodrome

Soyuz-U

1979 Aug 17: 215 x 234 km, 81.4 deg, 89.1 min

Photo-reconnaissance satellite. The launch announcement mentioned "...investigation of natural resources .... in the interests of the economy and international cooperation". Carried Nauka autonomous module. This was the final launch of a Zenit-2M.